US11143676B2 - Element of an electric equipment casing, in particular comprising U-shaped magnetic parts - Google Patents

Element of an electric equipment casing, in particular comprising U-shaped magnetic parts Download PDF

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Publication number
US11143676B2
US11143676B2 US16/223,130 US201816223130A US11143676B2 US 11143676 B2 US11143676 B2 US 11143676B2 US 201816223130 A US201816223130 A US 201816223130A US 11143676 B2 US11143676 B2 US 11143676B2
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United States
Prior art keywords
shaped part
electrical conductor
slots
electric equipment
electric
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US16/223,130
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US20190195920A1 (en
Inventor
Guillaume Tramet
Arnaud Mas
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Valeo eAutomotive France SAS
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Valeo Siemens eAutomotive France SAS
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/20—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices
    • G01R15/202—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices using Hall-effect devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0239—Electronic boxes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/0026—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units
    • H05K5/0047—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having a two-part housing enclosing a PCB
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0247—Electrical details of casings, e.g. terminals, passages for cables or wiring
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
    • H05K7/1427—Housings
    • H05K7/1432—Housings specially adapted for power drive units or power converters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
    • H05K7/1427—Housings
    • H05K7/1432—Housings specially adapted for power drive units or power converters
    • H05K7/14329—Housings specially adapted for power drive units or power converters specially adapted for the configuration of power bus bars
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0009—Devices or circuits for detecting current in a converter

Definitions

  • the present invention relates to an element of a casing for an electric equipment, in particular of an electric and hybrid vehicle.
  • the invention relates to the field of high-voltage electric equipment for electric and hybrid vehicles.
  • the purpose of the invention is to allow an assembly adapted to the mass production of U-shaped magnetic parts on a casing element of an electric equipment for vehicle.
  • an electric or hybrid automotive vehicle includes an electric motorisation system powered by a high-voltage power battery through an on-board high-voltage electrical system and a plurality of auxiliary electrical installations, which are powered by a low-voltage battery through an on-board low-voltage electrical system.
  • the high-voltage power battery powers the electric motorisation system, thereby providing for the vehicle's propulsion. More specifically, in order to control the electric device driving the wheels of the vehicle, the use of an inverter enabling the conversion of the direct current provided by the high-voltage power battery into one or several alternating control currents, for example sinusoidal currents, is known.
  • the inverter is in the form of casing on which are mounted an electronic power module and an electronic control unit.
  • the inverter comprises a body comprising the electric components through which the power driving the electric motor passes.
  • the electronic control unit comprises electronic components enabling to control the electronic power module.
  • the electronic power module For the purpose of connecting the electronic power module to the high-voltage battery, the electronic power module comprises an electrical conductor called “with positive potential” connected to the positive potential of the high-voltage power battery, and an electrical conductor called “with negative potential” connected to the negative potential of the high-voltage power battery.
  • the inverter comprises three electrical conductors, called “phase conductors”, enabling to connect the electronic power module to the electric motor to control the motor by using three currents, called “phase currents”, with a two-by-two phase change, for example of 120°, generated by the inverter from the direct current supplied by the high-voltage battery.
  • the intensity of the currents that circulates therein must be measured, by means of adapted sensors, in particular Hall effect sensors.
  • a known method is to provide members that focus the magnetic field produced by said currents. This magnetic field is measured by the corresponding Hall effect sensor, mounted on the electronic control unit. Based on the magnetic field, said sensor measures the intensity of the current circulating in the conductor.
  • said magnetic field focusing members are overmoulded on the phase conductors.
  • a first disadvantage of this system is the cost induced by such overmoulding operations in the context of mass production.
  • a second disadvantage is that the overmoulding generates a thermal shock that affects the member configured for focusing the magnetic field. This thermal shock causes a deterioration of the performance of said magnetic field focusing members by causing a disorganisation of the orientation of the molecules constituting the material of said members.
  • the solution consists in changing the settings of the current sensors to empirically change the measured values.
  • the present invention relates to an element of a casing comprising an area housing at least one electrical conductor and at least a pair of slots configured to be located on either side of said electrical conductor, into which are inserted the flat arms of a part with a U-shaped section, said arms being configured to provide a focusing function of the magnetic field generated by the current circulating in said electrical conductor.
  • the invention first relates to an element of a casing of a first electric equipment, in particular of an electric or hybrid vehicle, said casing element being configured to house at least one electric conductor provided to receive an electric current.
  • Said casing element is notable in that it comprises a pair of slots provided in a wall of the casing element, the pair of slots comprising a slot on either side of a reception area configured to house said electrical conductor, and said pair of slots being provided to allow the insertion of a part with a U-shaped section comprising a base and two arms parallel to one another and orthogonal to the base, said arms being configured to be inserted in said slots on either side of said reception area, so that the U-shaped part is able to guide a magnetic flux generated by an electric current circulating in said electrical conductor.
  • the casing element thereby enables the insertion of U-shaped magnetic parts in the pairs of slots to provide a focusing function of the magnetic fields induced by the currents circulating in the electrical conductor housed in the reception area, in order to provide a reliable measurement of the intensity of said currents by sensors, for example Hall effect sensors connected on a printed circuit board secured to the casing element.
  • the electrical conductor can be a strip made of an electrically-conducting material, for example copper, steel or aluminium.
  • the strip is preferably folded.
  • the electrical conductor comprises, in particular, a first end configured to be electrically connected to a component of the first electric equipment, for example an electronic power module, and a second end configured to be electrically connected to a second electric equipment, for example an electric device.
  • a U-shaped opening is provided in the wall between the slots of the pair of slots so as to form a tab comprising a protrusion and a degree of flexibility adapted to ensure a fixation clip function to hold the base of the U-shaped part inserted in the pair of slots.
  • said casing element is made of a single block.
  • the present invention also relates to an electric equipment comprising a casing element such as briefly described above, comprising at least one U-shaped part made of a magnetic material, comprising a base and two arms parallel to one another and orthogonal to the base, said arms being inserted in said slots on either side of the reception area, said U-shaped part being configured to guide a magnetic flux generated by a current circulating in the electrical conductor housed in the reception area.
  • a casing element such as briefly described above, comprising at least one U-shaped part made of a magnetic material, comprising a base and two arms parallel to one another and orthogonal to the base, said arms being inserted in said slots on either side of the reception area, said U-shaped part being configured to guide a magnetic flux generated by a current circulating in the electrical conductor housed in the reception area.
  • the electric equipment comprises an electrical conductor mounted in the reception area, and in which the electrical conductor locks the U-shaped part.
  • the flexibility of the tab is configured to enable the release of the U-shaped part by pressure applied on said tab in a direction opposite to the base of the U-shaped part.
  • the electrical conductor locks the U-shaped part by preventing the movement of the tab in a direction opposite to the base of the U-shaped part that is likely to cause the release of said U-shaped part.
  • a portion of the electrical conductor provides the locking function of the U-shaped part, said portion corresponding to a surface of said electrical conductor parallel to the wall and coming to bear against the tab, preventing all movement of the tab in a direction orthogonal to said wall and opposite to the base of said U-shaped part.
  • the wall forms an outer wall of the electric equipment and the electrical conductor comprises an end that forms an external electric terminal of the electric equipment and another end connected to an electric component included in said casing element, said U-shaped part being configured to guide a magnetic field produced by a current circulating in said electric conductor to perform a measurement of said current.
  • the electric equipment comprises a sensor, in particular a Hall effect sensor, located between the arms of the U-shaped part so as to measure a current circulating in the electrical conductor from a magnetic field guided by the U-shaped part.
  • a sensor in particular a Hall effect sensor
  • the electric equipment comprises a printed circuit board mounted in said casing element, said sensor being mounted on the printed circuit board, and said printed circuit board comprising slots in which the arms of the U-shaped part are inserted.
  • the printed circuit board is perpendicular to the wall, and the arms of the U-shaped part are introduced into the slots following a direction that is parallel to the plane of said printed circuit board.
  • the electrical conductor is secured to a terminal of a component of the first electric equipment, for example an electronic power module.
  • the electric equipment is an inverter provided to be electrically connected, on one hand, to an electric device of the vehicle and, on the other hand, to a high-voltage power battery of the vehicle.
  • the inverter comprises an electronic power module able to convert a direct current into a plurality of alternating currents called “phase currents”, said plurality of phase currents circulating between the electronic power module and the electric device of the vehicle through the plurality of electrical conductors.
  • the terms “electronic power module able to convert a direct current into a plurality of alternating currents” are used to describe the fact that the electronic power module can be configured to convert a direct current into a plurality of alternating currents and/or to convert a plurality of alternating currents into a direct current.
  • the invention also relates to an electric or hybrid vehicle comprising an electric device, for example a motorisation device, powered by a high-voltage power battery through an on-board high-voltage electrical system and an electric equipment, such as described above, connected to said electric device.
  • an electric device for example a motorisation device, powered by a high-voltage power battery through an on-board high-voltage electrical system and an electric equipment, such as described above, connected to said electric device.
  • FIG. 1 is a perspective view of an embodiment of an inverter according to the invention
  • FIG. 2 is a perspective view of the unit formed by the electronic module, the electronic control module, the first positive potential electrical conductor, the first negative potential electrical conductor, and the fixation bar of the inverter of FIG. 1 ,
  • FIG. 3 is a perspective view of a set of electrical conductors
  • FIG. 4 is a perspective view of the casing element of the inverter of FIG. 1 , comprising U-shaped parts,
  • FIG. 5 is a partial and close-up view of the casing element of FIG. 4 showing the two arms of a U-shaped part and the tab retaining said U-shaped part,
  • FIG. 6 is a perspective view of the U-shaped part shown alone
  • FIG. 7 is a perspective view of the casing element of FIG. 4 on which are mounted the electrical conductors of FIG. 3 and the U-shaped part of FIG. 6 ,
  • FIG. 8 is a bottom view of the casing element according to the invention, in which a printed circuit board is arranged.
  • the vehicle comprises in particular an electric device, an electric equipment in to form of an inverter, a high-voltage power battery, an on-board high voltage electrical system, a low-voltage power battery, an on-board low-voltage electrical system and a plurality of auxiliary electric equipment.
  • the electric equipment according to the invention is described below in its implementation for an inverter, without it limiting the scope of the present invention. It should therefore be noted that the electric equipment can be other than an inverter, for example a charger or a DCDC converter on board the vehicle
  • the on-board low-voltage electrical system connects the low-voltage power battery to the plurality of auxiliary electric equipment so that the low-voltage power battery powers said auxiliary electric equipment, such as on-board computers, the window lift motors, the multimedia system etc.
  • the low-voltage power battery typically delivers a voltage of around 12V, 24V or 48V.
  • the charging of the low-voltage battery is conducted from the high-voltage battery through a direct voltage to direct voltage converter, commonly known as a direct-to-direct converter.
  • the on-board high-voltage electrical system connects the high-voltage power battery to the inverter so that the high-voltage power battery powers the electric device through the inverter.
  • the high-voltage power battery typically supplies a voltage ranging from 100V to 900V, preferably from 100V to 500V.
  • the electrical power charging of the high-voltage power battery is achieved by connecting it, through the direct high-voltage electrical system of the vehicle, to an external electricity grid, for example the domestic alternating electricity grid.
  • the electric device is a rotating electric device, preferably provided to drive the wheels of the vehicle using the power supplied by the high-voltage power battery. More specifically, the electric device is an alternating current electric device powered by a source of multiphase current.
  • the electric device can be an alternating current motor.
  • the electric device is powered by a source of three-phase currents, without this being limiting in terms of the scope of the present invention.
  • the control of the electric device is achieved by means of an inverter.
  • Said inverter converts the direct current supplied by the high-voltage power battery into three alternating control currents, for example sinusoidal currents.
  • the purpose of the inverter is to transform the incoming direct current delivered by the high-voltage power battery into three phase currents that enable to control the electric device.
  • the electric device can also supply three alternating currents to the inverter, so that said inverter transforms them into a direct current that can be used to charge the high-voltage power battery.
  • the inverter 1 comprises a casing 5 in which are mounted, with reference to FIG. 2 , an electronic power module 10 , an electronic control unit (partially shown in FIG. 8 ) and a plurality of electrical conductors 30 , 40 , 111 , 112 , 113 .
  • the electronic control unit 20 comprises components enabling to control the components of the electronic power module 10 . More specifically, the electronic control unit 20 controls the electronic power module 10 so that it converts the direct current supplied by the high-voltage battery, defining a direct voltage from the first electrical conductor 30 and the second electrical conductor 40 , into three alternating phase currents to control the motor (or inversely).
  • the electronic power module 10 comprises a body 100 on which are secured the electrical conductors 30 , 40 , 111 , 112 , 113 . Furthermore, the electronic power module 10 comprises electronic power components through which the electric energy passes to power the electric device, in particular configured to convert the direct current to alternating currents or inversely.
  • the electronic power components can comprise electronic switches, such as, for example, semiconductor transistors, arranged in an electric circuit to enable a controlled passage of the electric power from the high voltage power battery to the electric device.
  • the electronic power components are bare semiconductor chips for which the body 100 provides an encapsulation.
  • the electronic power module 10 comprises three phase ports 121 , 122 , 123 , each delivering a control phase current to the motor as well as a positive external electric terminal and a negative external electric terminal (not shown).
  • the inverter comprises a first electrical conductor 30 configured to electrically connect the inverter 1 to the positive potential of the high-voltage battery (not shown), a second electrical conductor 40 configured to connect electrically the inverter 1 to the negative potential of the high-voltage battery and three “phase” conductors 111 , 112 , 113 provided to electrically connect the inverter 1 to the electric device.
  • each electrical conductor 30 , 40 is in the form of a strip on which extend fixation elements 301 , 401 to the body 100 of the electronic power module 10 by means of a screw 131 .
  • the inverter 1 further comprises an electrically-insulating fixation bar 50 separating the first electrical conductor 30 from the second electrical conductor 40 , in particular to prevent short-circuits between the first electrical conductor 30 and the second electrical conductor 40 .
  • the fixation bar 50 is preferably made of a plastic material, such as, for example, PBT GF30.
  • Each phase conductor 111 , 112 , 113 enables the electrical connection of a phase of the electric device controlled by the inverter 1 to the electronic power module 10 .
  • the inverter 1 could comprise a different amount of phase conductors 111 , 112 , 113 , in particular an amount based on the number of phases of the electric device controlled by the inverter 1 .
  • Each phase connector 111 , 112 , 113 is mounted on the phase port 121 , 122 , 123 and is secured thereto, for example by means of a screw (not shown), welding, or another method.
  • Each phase conductor 111 , 112 , 113 passes through an opening of the casing 5 to connect the inverter 1 to the electric device, and in particular to allow the circulation of alternating currents between the electronic power module 10 and the electric device.
  • each phase conductor 111 , 112 , 113 is in the form of a single-block part, i.e. made of a single part.
  • This part is in the form of a strip formed in an electrically-conducting material.
  • the thickness of the phase conductors 111 , 112 , 113 can be chosen based on their required use and, in particular, on the intensity of the currents that travel through them.
  • the thickness of the phase conductors 111 , 112 , 113 ranges from 0.5 to 3 mm.
  • the thickness of the phase conductors 111 , 112 , 113 is of around 1 mm, 1.5 mm or 2 mm.
  • the phase conductors 111 , 112 , 113 can also, advantageously, be treated with an anti-wear surface coating, for example made of tin and/or nickel for the compatibility of the materials or to improve the electric current.
  • each electrical conductor 111 , 112 , 113 comprises a central portion 111 A, 112 A, 113 A from which extend perpendicularly but in the opposite direction a first fixation end 111 B, 112 B, 113 B, and a second fixation end 111 C, 112 C, 113 C.
  • the first fixation end 111 B, 112 B, 113 B is configured to be connected to a phase port 121 , 122 , 123 of the electronic power module 10 , for example by means of a screw.
  • the first fixation end 111 B, 112 B, 113 B is in the form of a flat portion adapted to come into contact with a flat portion of a phase port 121 , 122 , 123 .
  • the second fixation end 111 C, 112 C, 113 C is configured to be connected to a phase conductor (not shown) of the electric device.
  • the second fixation end 111 C, 112 C, 113 C is in the form of a flat portion adapted to come into contact with a flat portion of a phase conductor of the electric device.
  • the second ends 111 C, 113 C of the phase conductors 111 and 113 are configured so as to come closer to the second end 112 C of the phase conductor 112 positioned centrally, which is located in the extension of the central portion 112 A of said central phase conductor 112 .
  • the second ends 111 C, 112 C, 113 C can be formed differently, depending in particular on the environment in which the inverter 1 is to be mounted.
  • the electronic control unit 20 is in the form of a printed circuit board 200 , as shown in FIG. 8 .
  • the printed circuit board 200 can be mounted on a wall of the casing 5 or a support element (not shown, but that can be, for example, a plate) suspended inside the housing defined by the casing 5 .
  • the electronic power module 10 , the support element and the electronic control unit 20 can be superimposed in the housing defined by the casing 5 , the support element then being between the electronic power module 10 and the electronic control unit 20 .
  • a support element can be placed in the casing 5 and maintained in position by bearing against portions of material of said casing 5 , in particular outgrowths from the surface of the casing 5 .
  • the support can in particular be held in place by being supported at its periphery.
  • This support element can for example be made of metal to improve the heat dissipation of the electronic control unit 20 .
  • the electronic control unit 20 can be configured to exchange, through signal connectors 5 - 31 , 5 - 32 shown in FIG. 1 , data signals with the exterior of the inverter 1 , for example with a controller of the vehicle.
  • current sensors 301 , 302 , 303 provided to perform measurements of the intensity of the current circulating in the phase conductors 111 , 112 , 113 , are for example mounted on the surface of the printed circuit board 200 of the electronic control unit 20 .
  • each current sensor 301 , 302 , 303 is able to measure the current from the magnetic field generated by each phase conductor 111 , 112 , 113 due to the passage of current.
  • the current sensors 301 , 302 , 303 are, for example, Hall effect sensors.
  • Each current sensor 301 , 302 , 303 can comprise pins that are inserted into the printed circuit board 200 of the electronic control unit 20 to which they transmit the measured value.
  • U-shaped parts 5 - 14 made of a magnetic material, shown in FIG. 4 are configured to provide a focusing function of the magnetic fields induced by the currents circulating in each phase conductor 111 , 112 , 113 to enable said sensor 301 , 302 , 303 , in particular Hall effect sensors, to perform reliable measurements of the intensity of said currents circulating in the phase conductors 111 , 112 , 113 .
  • the U-shaped parts 5 - 14 are configured to guide the magnetic flux generated by the current circulating in each phase conductor 111 , 112 , 113 , so as to focus said magnetic flux towards the sensor, in particular a Hall effect sensor 301 , 302 , 303 , to provide a reliable measurement of the intensity of the current circulating in said phase conductor 111 , 112 , 113 .
  • said printed circuit board 200 comprises slots into which the arms 5 - 142 of the U-shaped part 5 - 14 are inserted. Therefore, the arms 5 - 142 of the U-shaped part 5 - 14 are as close as possible to the corresponding sensor 301 , 302 , 303 mounted on the printed circuit board 200 .
  • the printed circuit board 200 is perpendicular to the wall 5 - 10 of the casing element 5 - 1 , and the arms 5 - 142 of the U-shaped part 5 - 14 are inserted in said slots in a direction parallel to the plane of said circuit board 200 .
  • the casing 5 comprises a casing element 5 - 1 and a cover 5 - 2 , mounted on the element of the casing 5 .
  • the casing 5 also comprises a bottom (not visible in FIG. 1 ) that extends under the casing element 5 - 1 .
  • the inverter 1 further comprises, in a non-limiting manner, two signal connectors 5 - 31 , 5 - 32 , described above, and a power connector 5 - 4 configured to connect the inverter 1 to an electric power cable, said connectors being mounted on the cover 5 - 2 of the casing 5 .
  • the casing element 5 - 1 is in the form of a single-piece part made by moulding a plastic material.
  • the casing element 5 - 1 comprises a side wall 5 - 10 in the form of a U-shaped belt and support elements 5 - 11 configured to support the electronic power module 10 and the electronic control unit 20 .
  • the support elements 5 - 11 comprise for example hooks to secure the body 100 of the electronic power module 10 .
  • the casing element 5 - 1 comprises reception members 5 - 12 A, 5 - 12 B, enabling to immobilise, for example by force fitting, the phase conductors 111 , 112 , 113 .
  • these reception members are formed from the material of the side wall 5 - 10 and comprise three pairs of walls, each adapted to house a phase conductor 111 , 112 , 113 .
  • each pair of walls comprises a first wall 5 - 12 A, and a second wall 5 - 12 B that extend parallel to one another and perpendicular to the side wall 5 - 10 so as to immobilise a phase conductor 111 , 112 , 113 .
  • the first wall 5 - 12 A and the second wall 5 - 12 B of each pair of walls 5 - 12 A, 5 - 12 B extend substantially over the entire height of the side wall 5 - 10 .
  • each one of the first wall 5 - 12 A and of the second wall 5 - 12 B of each pair of walls 5 - 12 A, 5 - 12 B comprises at least one gadroon.
  • This gadroon forms an excess material thickness to help adjust the insertion between each pair of walls 5 - 12 A, 5 - 126 and the corresponding phase conductor 111 , 112 , 113 so as to immobilise them efficiently one in the other.
  • the gadroons are formed from the material of the first wall 5 - 12 A and of the second wall 5 - 12 B of each pair of walls 5 - 12 A, 5 - 12 B.
  • the first wall 5 - 12 A comprises an abutment portion 5 - 12 A 1 , that extends in parallel to the side wall 5 - 10 in the direction of the second wall 5 - 12 B
  • the second wall 5 - 12 B comprises an abutment portion 5 - 1261 , that extends in parallel to the side wall 5 - 10 in the direction of the first wall 5 - 12 A.
  • the casing element 5 - 1 comprises slots into which are inserted the parts 5 - 14 that have a U-shaped section.
  • a pair of slots is provided on either side of each reception member 5 - 12 A, 5 - 12 B of a phase conductor 111 , 112 , 113 .
  • the parts 5 - 14 that comprise a U-shaped section are provided for magnetic field focusing purposes. These U-shaped parts 5 - 14 are manufactured by moulding, separately, so as to ensure the orientation of the molecules in the material configured to enable an efficient focusing function of the magnetic field with respect to the magnetic fields generated by the currents circulating in the phase conductors 111 , 112 , 113 .
  • each U-shaped part 5 - 14 comprises a flat base 5 - 141 and two flat arms 5 - 142 , parallel to one another and orthogonal to the base, configured to be inserted in the slots of a pair of slots, so that said arms are on either side of a reception member of a phase conductor 111 , 112 , 113 , the flat base of the U-shaped part coming to bear against the side wall 5 - 10 , from the outside of the casing element.
  • an opening is provided in the side wall 5 - 10 to form a flexible tab 5 - 13 comprising a protrusion 5 - 131 .
  • the protrusion serves as a mounting clip configured to cooperate with the flat base of the U-shaped shield so as to retain said U-shaped part against the casing element.
  • phase conductors 111 , 112 , 113 once inserted in the casing element 5 and housed by their respective reception member 5 - 12 A, 5 - 12 B, come to bear, through their central portion 111 A, 112 A, 113 A, against the side wall 5 - 10 and therefore against the flexible tab 5 - 13 , thereby locking the U-shaped part by preventing all movement of said flexible tab 5 - 13 in the opposite direction to the base of the “U”, preventing the release of said U-shaped part 5 - 14 .
  • the electronic power module 10 and the electronic control unit 20 are assembled first.
  • the U-shaped parts 5 - 14 are then inserted in the casing element 5 - 1 by inserting the flat arms 5 - 142 in the slots provided for that purpose.
  • the flexible tab 5 - 13 features a protrusion that ensures the fixation by clipping of each U-shaped part 5 - 14 .
  • phase conductor 111 , 112 , 113 is then inserted, for example by force fitting, by sliding it between each pair of walls 5 - 12 A, 5 - 12 B.
  • the phase conductors 111 , 112 , 113 are for example blocked by the gadroons between the first wall 5 - 12 A and the second wall 5 - 12 B.
  • FIG. 7 shows a casing element 5 - 1 in which three U-shaped parts 5 - 14 and three phase conductors 111 , 112 , 113 have been inserted.
  • each phase conductor 111 , 112 , 113 is screwed to the corresponding phase port 121 , 122 , 123 so as to connect it electrically to the phase ports 121 , 122 , 123 of the electronic power module 10 .
  • each pair of walls 5 - 12 A, 5 - 12 B further enable to maintain the phase conductors 111 , 112 , 113 between the first wall 5 - 12 A and the second wall 5 - 12 B of each pair of walls 5 - 12 A, 5 - 12 B.
  • each phase conductor 111 , 112 , 113 forms an abutment that prevents all movement of the flexible tab 5 - 13 in a direction opposite the flat base portion 141 of each U-shaped part 5 - 14 . Therefore, the U-shaped parts 5 - 14 are locked into position and can no longer be released as long as the corresponding phase conductor 111 , 112 , 113 is present opposite to the flexible tab 5 - 13 .
  • the cover 5 - 2 and the bottom of the casing 5 can then be secured to the casing element 5 - 1 so as to close the casing and, for example, to seal the inverter 1 .
  • the phase conductors 111 , 112 , 113 of the inverter 1 can then be electrically connected to the electric device and the positive and negative potential electrical conductors 30 , 40 can be connected to the high-voltage battery of the vehicle.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Inverter Devices (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
US16/223,130 2017-12-22 2018-12-18 Element of an electric equipment casing, in particular comprising U-shaped magnetic parts Active US11143676B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1762967A FR3076094B1 (fr) 2017-12-22 2017-12-22 Element de boitier d’un equipement electrique, en particulier comprenant des pieces magnetiques en ‘u’
FR1762967 2017-12-22

Publications (2)

Publication Number Publication Date
US20190195920A1 US20190195920A1 (en) 2019-06-27
US11143676B2 true US11143676B2 (en) 2021-10-12

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US16/223,130 Active US11143676B2 (en) 2017-12-22 2018-12-18 Element of an electric equipment casing, in particular comprising U-shaped magnetic parts

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US (1) US11143676B2 (ko)
EP (1) EP3501907B1 (ko)
JP (1) JP2019126248A (ko)
KR (1) KR102687277B1 (ko)
CN (1) CN109962629A (ko)
FR (1) FR3076094B1 (ko)
HU (1) HUE053034T2 (ko)

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US11291115B2 (en) 2018-03-30 2022-03-29 Intel Corporation Server microprocessor carrier with guiding alignment anti-tilt and automatic thermal interface material separation features for use in land grid array sockets
US11296009B2 (en) 2018-03-30 2022-04-05 Intel Corporation Method and apparatus for detaching a microprocessor from a heat sink
US11387163B2 (en) 2018-03-30 2022-07-12 Intel Corporation Scalable debris-free socket loading mechanism
US11449111B2 (en) * 2018-03-30 2022-09-20 Intel Corporation Scalable, high load, low stiffness, and small footprint loading mechanism
US11557529B2 (en) 2018-03-30 2023-01-17 Intel Corporation Mechanism combining fastener captivation and assembly tilt control for microprocessor thermal solutions

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KR102398110B1 (ko) * 2020-08-13 2022-05-13 주식회사 경신 차량용 인-케이블 제어장치
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Publication number Priority date Publication date Assignee Title
US11291115B2 (en) 2018-03-30 2022-03-29 Intel Corporation Server microprocessor carrier with guiding alignment anti-tilt and automatic thermal interface material separation features for use in land grid array sockets
US11296009B2 (en) 2018-03-30 2022-04-05 Intel Corporation Method and apparatus for detaching a microprocessor from a heat sink
US11387163B2 (en) 2018-03-30 2022-07-12 Intel Corporation Scalable debris-free socket loading mechanism
US11449111B2 (en) * 2018-03-30 2022-09-20 Intel Corporation Scalable, high load, low stiffness, and small footprint loading mechanism
US11557529B2 (en) 2018-03-30 2023-01-17 Intel Corporation Mechanism combining fastener captivation and assembly tilt control for microprocessor thermal solutions

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Publication number Publication date
KR20190076880A (ko) 2019-07-02
HUE053034T2 (hu) 2021-06-28
US20190195920A1 (en) 2019-06-27
KR102687277B1 (ko) 2024-07-22
JP2019126248A (ja) 2019-07-25
FR3076094A1 (fr) 2019-06-28
CN109962629A (zh) 2019-07-02
FR3076094B1 (fr) 2020-01-10
EP3501907A1 (fr) 2019-06-26
EP3501907B1 (fr) 2020-10-14

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